Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!shawnee.cis.ohio-state.edu!tj From: tj@shawnee.cis.ohio-state.edu (Todd R. Johnson) Newsgroups: comp.sys.amiga Subject: Re: NEC 3D on an Amiga Keywords: NEC 3D Amiga Message-ID: <59049@tut.cis.ohio-state.edu> Date: 28 Aug 89 18:23:12 GMT References: <420@h.cs.wvu.wvnet.edu> Sender: news@tut.cis.ohio-state.edu Reply-To: Todd R. Johnson Organization: The Ohio State University Dept of Computer & Information Lines: 78 In article <420@h.cs.wvu.wvnet.edu> dbl@a.cs.wvu.wvnet.edu (David Lawson) writes: < < I am about to buy a 2000 and an NEC 3D Multisync monitor. I need < to know about any problems with this combination. In particular: < < 1) How well does this work with interlaced displays, if at all? Quite well. There appears to be a little less flicker than on my Sony KV-1311CR. < 2) How well is this going to work with the ECS? I don't know. If someone from CBM would send me the new Denise, I'd be glad to check it out. :-) < 3) Should I be considering another monitor, I am attached to the < idea of getting an NEC but I am not religious about it. The Sony 1302 looks nice, but I'm not sure that it will handle interlace. The NEC was purchased with the understanding that it could be returned if it didn't handle interlace. < 4) What are the cabling problems, if any? The NEC is quite strange. The connector diagrams in the manual describe several ways to hook up the monitor using the supplied 15-9 pin adaptor. Each diagram has different assignments for the same pins. For example, pin 1 on the IBM PGC diagram is RED, while pin 1 on the IBM VGA diagram is ground. I followed the IBM PGC diagram: NEC 9 pin Amiga DB-23 (argh!) 1 red 3 2 green 4 3 blue 5 4 composite sync 10 5 no-connection 6 red ground 16 7 green ground 17 8 blue ground 18 9 ground 19 (Amiga numbers from memory, so look them up to be sure.) I had to use a plastic 25 pin ribbon connector, because no local store carries DB-23's and the metal connectors are too hard to cut. The monitor does work with this setup, but has two problems: (1) for the first 3-5 minutes after power-up it is constantly resizes the screen, going from full screen to half screen. Once it warms up it settles on the full screen. This sounds like a problem with the cable or a defect in the monitor. (2) the monitor is ghosting. On some backgrounds the ghosts are barely noticeable, but on bright backgrounds they can be quite annoying. I think this is a result of the cable. I need to get a DB-23 and possibly better wire. Ignoring these two problems, the NEC 3d display is excellent. It is just slightly sharper than my Sony and colors seem a little more vibrant. With the adjustments you can even squish the display area to half size to get rid of the scan lines between pixels. This results in a much more pleasant display for text. (In fact, the squished text looks almost as good as what I saw on a lowly CBM colt using an enhanced VGA card. Sigh.) < Thanks in advance. < < Dave Lawson Sure. ---Todd tj@cis.ohio-state.edu -=- ---Todd tj@cis.ohio-state.edu